Not audio per se but of equal historic value ...
An anonymous donor with links to John Logie Baird's home town has
stepped in to ensure a historic recording of his first transmission of
trans-Atlantic TV pictures will stay in Scotland.
The 1927 footage, on a phonovision shellac disc, is the world's oldest
surviving 78rpm piece of video.
It features Logie Baird's ventriloquist dummy Stookie Bill, which he
used when developing his invention.
The recording will now be stored at Glasgow University.